Marijuana operation regulations in King County received approval Dec. 9.

During its regular meeting, the King County Council unanimously adopted legislation modifying county building codes and development regulations for the placement of recreational marijuana businesses licensed by the state Liquor Control Board. The regulations would only apply to unincorporated areas.

Outdoor and greenhouse growing would be available in agricultural and rural areas. Indoor growing would be available in business and industrial zones. As per state guidelines, operations cannot exist within 1,000 feet of childcare centers, schools, parks, libraries, recreation centers or in residential areas.